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Difficulty: MediumHigh-Performing and Elastic Compute Solutions

A connected vehicle platform uses a fleet of Amazon EC2 instances to ingest real-time telemetry data. The ingestion application runs on a custom TCP port 9099 and requires sub-millisecond node-to-node latency for memory synchronization between instances. A Network Load Balancer (NLB) distributes the incoming TCP connections. Which combination of actions should a solutions architect implement to meet these requirements? (Select TWO.)

  1. Deploy the EC2 instances in a cluster placement group.Answer
  2. Configure the Network Load Balancer target group health checks to use TCP port 9099.Answer
  3. C
    Deploy the EC2 instances in a spread placement group.
  4. D
    Deploy the EC2 instances in a partition placement group.
  5. E
    Configure the Network Load Balancer target group health checks to use the default HTTP port 80.

Answer

Deploy the EC2 instances in a cluster placement group, and configure the Network Load Balancer target group health checks to use TCP port 9099.
Deploying instances in a cluster placement group meets the requirement for low-latency node-to-node communication by packing instances close together inside a single Availability Zone. Setting the load balancer health checks to TCP port 9099 ensures the health check queries the actual port where the ingestion agent is listening.

Step-by-Step Solution

1
Analyze placement group options for low-latency requirements.
Cluster placement groups provide sub-millisecond node-to-node latency, whereas spread and partition placement groups focus on high availability and fault isolation by spreading instances across hardware.
Tightly-coupled applications requiring high-performance MPI or memory synchronization need cluster placement groups.
2
Evaluate the target group health check configuration.
Identify that the telemetry ingestion application runs on port 9099, so health checks must target port 9099.
Using the default port 80 for health checks when the application listens on port 9099 will result in health check failures and service disruption.

Key Concept

Low-latency compute clustering and load balancer health check configuration.
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Topics

High-Performing and Elastic Compute Solutions

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